On Point Piling
Sydney, NSW
NSW Fair Trading licence checked
On Point Piling operates in the Banksmeadow, NSW area, offering remedial building services. Contact them directly for a current quote.
Mainmark Sydney
Resin injection
Based in North Sydney, NSW, Mainmark Sydney offers underpinning and structural repair services to local homeowners, including resin injection.
Sydney's mix of coastal salt exposure and pockets of reactive clay and shale across the west and north-west means both concrete cancer and footing movement turn up regularly here.
As a 2025 guide, typical underpinning runs about $4,000 to $15,000 and concrete cancer repair varies widely with access -- a guide, not a quote. See the cost guide for the detail.
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Ask the provider for current licence, insurance and availability details.
Common questions
What services is Mainmark Sydney listed for?
Mainmark Sydney is listed on this directory under Resin injection. That reflects publicly available information about the business, not a verified service list, so confirm exactly what Mainmark Sydney can do for your job directly with them.
Is Mainmark Sydney licensed and insured?
Licensing and insurance are not part of what this directory verifies. Before hiring Mainmark Sydney, ask them directly for current licence and insurance details, and cross-check with your state's building or fair trading authority.
Should I get a structural engineer's assessment before contacting Mainmark Sydney?
If the cracking looks structural rather than cosmetic (wide, growing, diagonal or paired with sticking doors and sloping floors), get an engineer's assessment before you contact any contractor, Mainmark Sydney included. It stops you paying for a fix you may not need and lets you compare quotes fairly.
How much should I expect a job like this to cost?
Expect a range rather than a fixed number: common residential underpinning falls around $4,000 to $15,000, with concrete cancer repair depending heavily on access. Our cost guide has the detail; use it to sanity-check any quote you get from Mainmark Sydney.
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